The normal right eye of a boy whose left eye was inadvertently inoculated with vaccinia virus. https://www.rawpixel.com/image/2282540/free-photo-image-eye-experiment-diseaseFree Image from public domain licenseA doctor placing a bandage on the injection site of a child. https://www.rawpixel.com/image/2288504/free-photo-image-vaccine-childrens-vaccination-child-clinicFree Image from public domain licenseUltrastructural illustration of coronavirus transparent png https://www.rawpixel.com/image/2288756/free-illustration-png-virus-science-biologyView licenseA man receiving a dose of the investigational NIAID/GlaxoSmithKline (GSK) Ebola vaccine. Original image sourced from US… https://www.rawpixel.com/image/2288496/free-photo-image-vaccine-injection-doctorFree Image from public domain licenseThe 1950s historical photograph of an extreme air pollution event at Salt Lake City, Utah. Original image sourced from US… https://www.rawpixel.com/image/2288462/free-photo-image-street-vintage-smogFree Image from public domain licenseA medical illustration of Clostridioides difficile bacteria, formerly known as Clostridium difficile. https://www.rawpixel.com/image/2288638/free-photo-image-bacteria-biologyFree Image from public domain licenseTransmission electron microscopic (TEM) image, revealed ultrastructural details exhibited by numerous, Coxiella burnetii… https://www.rawpixel.com/image/2288506/free-photo-image-science-biology-antibodyFree Image from public domain licenseUltrastructural illustration of coronavirus transparent png https://www.rawpixel.com/image/2288754/free-illustration-png-science-antibodyView licenseA scientist testing bacterial samples for their antimicrobial susceptibility. Original image sourced from US Government… https://www.rawpixel.com/image/2288533/free-photo-image-laboratory-scientist-scienceFree Image from public domain licensePhotomicrograph of a brain tissue specimen. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282503/free-photo-image-brain-purple-cellFree Image from public domain licenseA medical illustration of Clostridioides difficile bacteria, formerly known as Clostridium difficile. https://www.rawpixel.com/image/2288536/free-photo-image-difficile-bacteria-microscopeFree Image from public domain licenseA doctor placing a bandage on the injection site of a child. https://www.rawpixel.com/image/2288501/free-photo-image-vaccine-child-doctor-vaccinationFree Image from public domain licenseA 100X photomicrograph magnification of histopathologic morphology associated with the agriculturally–related… https://www.rawpixel.com/image/2288356/free-photo-image-microscope-antibody-virusFree Image from public domain licenseA Petri dish culture plate containing a growth medium of Sabouraud dextrose agar, which had been inoculated with the fungal… https://www.rawpixel.com/image/2288344/free-photo-image-petri-dish-microscopeFree Image from public domain licenseTest Tubes from experimenting on coronavirus. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282525/free-photo-image-laboratory-rna-labFree Image from public domain licenseAn example of acute necrotizing ulcerative gingivitis, also known as trench mouth. Original image sourced from US Government… https://www.rawpixel.com/image/2288464/free-photo-image-teeth-mouth-gingivitisFree Image from public domain licenseA close left lateral view of a female Oriental rat flea, Xenopsylla cheopis that transmit the bacterium Yersinia pestis, the… https://www.rawpixel.com/image/2288454/free-photo-image-insect-plague-ratFree Image from public domain licensePhotomicrograph of Giemsa stained lung tissue. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282485/free-photo-image-yeast-abstract-parasiteFree Image from public domain licenseA doctor administering an intramuscular immunization to a middle–aged woman. Original image sourced from US Government… https://www.rawpixel.com/image/2288468/free-photo-image-vaccine-doctor-womanFree Image from public domain licenseA medical illustration of vancomycin–resistant, Enterococci sp. bacteria. Original image sourced from US Government… https://www.rawpixel.com/image/2288535/free-photo-image-bacteria-lab-resistantFree Image from public domain licenseA medical illustration of drug–resistant, Streptococcus pneumoniae bacteria. Original image sourced from US Government… https://www.rawpixel.com/image/2288505/free-photo-image-science-lab-bacteria-resistantFree Image from public domain licenseA 3D graphical representation of a number of norovirus virions, set against a white background. https://www.rawpixel.com/image/2288343/free-photo-image-biology-scienceFree Image from public domain licenseMagnified respiratory syndrome coronavirus. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282482/free-photo-image-science-background-covid-cc0Free Image from public domain licenseA medical illustration of drug–resistant, Streptococcus pneumoniae bacteria. Original image sourced from US Government… https://www.rawpixel.com/image/2288644/free-photo-image-streptococcus-pneumoniae-science-laboratoryFree Image from public domain licenseA 3D illustration of Clostridioides difficile bacteria https://www.rawpixel.com/image/2290006/free-psd-bacteria-difficile-clostridioidesView licenseMagnified respiratory syndrome coronavirus. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282573/free-photo-image-coronavirus-science-public-domainFree Image from public domain licenseA 1125X photomicrograph magnification of Giemsa stained blood smear, revealed a number of Plasmodium falciparum parasites… https://www.rawpixel.com/image/2288371/free-photo-image-algae-microscope-blood-cellFree Image from public domain licenseA female, Aedes aegypti mosquito obtaining a blood meal from a human host. Original image sourced from US Government… https://www.rawpixel.com/image/2288460/free-photo-image-mosquito-aedes-aegyptiFree Image from public domain licenseMagnified respiratory syndrome coronavirus. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282554/free-photo-image-microscopic-magnification-parasiteFree Image from public domain licenseA left lateral view of a common bed bug, Cimex lectularius. Original image sourced from US Government department: Public… https://www.rawpixel.com/image/2288471/free-photo-image-bed-bugs-bugFree Image from public domain licenseA 440X photomicrograph magnification of a hematoxylin and eosin (H&E)–stained liver tissue specimen, revealed the… https://www.rawpixel.com/image/2288347/free-photo-image-liver-organ-medical-organs-tissueFree Image from public domain licenseA close view of a Petri dish culture plate, which had contained a growth medium of sheep blood agar (SBA), and which was… https://www.rawpixel.com/image/2288445/free-photo-image-petri-dish-bacteria-microscopeFree Image from public domain licenseA 1125X photomicrograph magnification of a Giemsa stained, thin film blood smear, revealed a mature, Plasmodium malariae… https://www.rawpixel.com/image/2288374/free-photo-image-algae-blood-cells-microscopeFree Image from public domain licenseA 3D image of a group of anaerobic, spore-forming, Clostridium sp. organisms. Original image sourced from US Government… https://www.rawpixel.com/image/2288353/free-photo-image-bacteria-anaerobicFree Image from public domain licenseA female, Aedes aegypti mosquito obtaining a blood meal from a human host. Original image sourced from US Government… https://www.rawpixel.com/image/2288463/free-photo-image-mosquito-aedes-aegyptiFree Image from public domain licenseA photomicrograph reveals numerous Gram–negative, Francisella tularensis coccobacilli, the bacterium responsible for… https://www.rawpixel.com/image/2288585/free-photo-image-microscope-cdc-gram-negative-bacteriaFree Image from public domain licenseA 100X photomicrograph magnification of a malachite green spore stained sample, revealed the presence of numerous Bacillus… https://www.rawpixel.com/image/2288583/free-photo-image-microscope-bacteria-medical-organsFree Image from public domain licenseLaboratory technicians working in health lab. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2288321/free-photo-image-laboratory-africa-healthcareFree Image from public domain licenseLaboratory technicians working together. Original image sourced from US Government department: Public Health Image Library… https://www.rawpixel.com/image/2288312/free-photo-image-africa-black-woman-african-americanFree Image from public domain licenseAn adult bedbug, Cimex lectularius ingestinging a blood meal. Original image sourced from US Government department: Public… https://www.rawpixel.com/image/2288450/free-photo-image-insect-bug-animalFree Image from public domain licenseA typical date palm, Phoenix dactylifera, growing somewhere in Egypt’s arid environment. https://www.rawpixel.com/image/2288338/free-photo-image-palm-tree-palm-egyptianFree Image from public domain licenseA field epidemiologist performing a mouth swab inside the beak of a white duck, in order to carry out an infectious disease… https://www.rawpixel.com/image/2288332/free-photo-image-animal-testing-swab-mouthFree Image from public domain licensePenned cattle undergoing an inspection for signs of central nervous system disorders. Original image sourced from US… https://www.rawpixel.com/image/2288453/free-photo-image-cow-cattle-animalFree Image from public domain licenseMagnified respiratory syndrome coronavirus. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282587/free-photo-image-cell-microscope-coronavirus-mutateFree Image from public domain licenseA male brown dog tick, Rhipicephalus sanguineus. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2288457/free-photo-image-tick-dog-insectFree Image from public domain licenseA Cambodian boy receiving his injection of measles vaccine. Original image sourced from US Government department: Public… https://www.rawpixel.com/image/2288317/free-photo-image-vaccine-measles-cambodiaFree Image from public domain licenseA dorsal view of a highly toxic black scorpion, Tityus trinitatis, which is native to Trinidad. https://www.rawpixel.com/image/2288469/free-photo-image-scorpion-insect-riskFree Image from public domain licenseA 1000X photomicrograph magnification of a direct fluorescent antibody (DFA)–stained specimen, revealing the presence… https://www.rawpixel.com/image/2288586/free-photo-image-biology-microscope-fluorescent-antibodyFree Image from public domain licenseA technician placing the repackaged influenza samples into a cold–storage environment within the laboratory setting. https://www.rawpixel.com/image/2288316/free-photo-image-cold-storage-gloves-virusFree Image from public domain licenseA scientist holding up a glass slide used for a run on a sequencing machine. Original image sourced from US Government… https://www.rawpixel.com/image/2288551/free-photo-image-scientist-disease-sequencingFree Image from public domain licensePhotomicrograph of a blood smear specimen. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282493/free-photo-image-pink-blood-cell-intestinal-parasiteFree Image from public domain licenseA 440X photomicrograph magnification of a hematoxylin and eosin (H&E)–stained liver tissue specimen, revealed the… https://www.rawpixel.com/image/2288366/free-photo-image-microscope-awarenessFree Image from public domain licenseA clinician conducting an examination of a young female patient’s left ear, using an otoscope. https://www.rawpixel.com/image/2288500/free-photo-image-ear-doctor-checking-earsFree Image from public domain licenseRaccoon, Procyon lotor, a vector in the transmission of rabies to humans and other animals. Original image sourced from US… https://www.rawpixel.com/image/2288474/free-photo-image-raccoon-vector-animalFree Image from public domain licensePhotomicrograph of a parasite. Original image sourced from US Government department: Public Health Image Library, Centers… https://www.rawpixel.com/image/2282491/free-photo-image-leishmania-germ-gastrointestinalFree Image from public domain licenseA healthcare worker extracting a blood sample from the right big toe of an infant. Original image sourced from US Government… https://www.rawpixel.com/image/2288376/free-photo-image-baby-feet-test-footFree Image from public domain licenseA 125X photomicrograph magnification of a hematoxylin and eosin (H&E)–stained lung tissue specimen, revealed the… https://www.rawpixel.com/image/2288370/free-photo-image-microscope-medical-organs-tissueFree Image from public domain licenseAfrican dwarf frog, Hymenochirus boettgeri. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282511/free-photo-image-exotic-public-domain-frog-africanFree Image from public domain licenseA medical illustration of drug–resistant, Mycoplasma genitalium bacteria. Original image sourced from US Government… https://www.rawpixel.com/image/2288650/free-photo-image-science-laboratory-bacteria-resistantFree Image from public domain licenseA clinician in the process of conducting a blood pressure examination. Original image sourced from US Government department:… https://www.rawpixel.com/image/2288490/free-photo-image-blood-pressure-checkup-hospital-doctorFree Image from public domain licenseInfluenza virus experimentation with eggs. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282576/free-photo-image-science-public-domain-lab-eggFree Image from public domain licenseA doctor performing a surgical procedure on a canine patient. Original image sourced from US Government department: Public… https://www.rawpixel.com/image/2288511/free-photo-image-vet-doctor-veterinaryFree Image from public domain licenseA scientist demonstrating a lab technique called “candling,” which determines if the egg is suitable for use in… https://www.rawpixel.com/image/2288629/free-photo-image-bioengineering-disease-scientist-bioFree Image from public domain licenseA scientist preparing samples for mass spectrometry in order to determine the presence of a bacterial toxin. https://www.rawpixel.com/image/2288538/free-photo-image-spectrometry-pipette-bacterial-toxinFree Image from public domain licenseCloseup process of ingesting a blood meal from the arm of a voluntary human host. Original image sourced from US Government… https://www.rawpixel.com/image/2282410/free-photo-image-bug-human-americas-public-domainFree Image from public domain licenseA scientist studying new methods for detecting foodborne bacteria directly from a patient sample. https://www.rawpixel.com/image/2288550/free-photo-image-scientist-bio-creative-commonsFree Image from public domain licenseUltrastructural illustration of coronavirus https://www.rawpixel.com/image/2288750/free-psd-antibody-awarenessView licenseA scientist studying new methods for detecting foodborne bacteria directly from a patient sample. https://www.rawpixel.com/image/2288549/free-photo-image-science-virus-creative-commonsFree Image from public domain licenseDomestic Training Course for healthcare workers. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2288384/free-photo-image-awareness-biology-cdcFree Image from public domain licenseA still life of castor bean, Ricinus communis containing the water soluble, highly toxic poison known as ricin. https://www.rawpixel.com/image/2288318/free-photo-image-still-life-castor-poisonFree Image from public domain licenseA photomicrograph of a direct fluorescent antibody (DFA)–stained specimen, revealing the presence of numerous… https://www.rawpixel.com/image/2288587/free-photo-image-antibody-awarenessFree Image from public domain licenseA scientist holding a culture test plate. Original image sourced from US Government department: Public Health Image Library… https://www.rawpixel.com/image/2288622/free-photo-image-culture-biology-scienceFree Image from public domain licenseA medical illustration of vancomycin–resistant, Enterococci sp. bacteria. Original image sourced from US Government… https://www.rawpixel.com/image/2288639/free-photo-image-lab-bacteriaFree Image from public domain licenseA scientist using a whole genome DNA sequencer, in order to determine the “DNA fingerprint” of a specific… https://www.rawpixel.com/image/2288531/free-photo-image-dna-scientist-lab-scienceFree Image from public domain licenseWoman reading coronavirus updates from a laptop mockup with editorial graphic from https://www.cdc.gov/coronavirus/2019… https://www.rawpixel.com/image/2311645/free-photo-image-laptop-mockup-america-awarenessView licenseA supply ship. Original image sourced from US Government department: Public Health Image Library, Centers for Disease… https://www.rawpixel.com/image/2288499/free-photo-image-cargo-carriage-carryFree Image from public domain licenseWoman reading coronavirus information from a phone mockup with editorial graphic from https://www.coronavirus.gov/ accessed… https://www.rawpixel.com/image/2312134/free-photo-image-awareness-cdc-centers-for-disease-control-and-preventionView licenseWoman reading coronavirus updates from a laptop mockup with editorial graphic from https://www.cdc.gov/coronavirus/2019… https://www.rawpixel.com/image/2312678/free-photo-image-mockup-person-and-computer-using-using-laptopView licenseWoman reading coronavirus updates from a mobile phone mockup with editorial graphic from… https://www.rawpixel.com/image/2312240/free-photo-image-mockup-case-rain-search-internetView licenseWoman reading coronavirus updates from a mobile phone mockup with editorial graphic from https://www.cdc.gov accessed on… https://www.rawpixel.com/image/2312642/free-photo-image-laptop-mockup-awareness-cdcView licenseA scientist demonstrating a lab technique called “candling,” which determines if the egg is suitable for use in… https://www.rawpixel.com/image/2288528/free-photo-image-lab-awareness-biologyFree Image from public domain licenseMan evaluating mosquito nets to prevent Malaria. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2288383/free-photo-image-malaria-africa-mosquitoFree Image from public domain licenseWoman reading coronavirus information from a computer mockup with editorial graphic from https://www.coronavirus.gov/… https://www.rawpixel.com/image/2312601/free-photo-image-covid-and-networking-working-for-yourself-mockup-person-using-computerView licenseWoman reading coronavirus updates from a laptop mockup with editorial graphic from https://www.cdc.gov accessed on April 8th… https://www.rawpixel.com/image/2312238/free-photo-image-communication-covid-awareness-cdcView licenseInfluenza virus illustration in semi–transparent blue https://www.rawpixel.com/image/2288768/free-psd-blue-cdcView licenseWoman reading coronavirus updates from a laptop mockup with editorial graphic from https://www.cdc.gov/coronavirus/2019… https://www.rawpixel.com/image/2312233/free-photo-image-communication-covid-mockup-person-using-computer-americaView licenseA technician testing possible sites of transmission. Original image sourced from US Government department: Public Health… https://www.rawpixel.com/image/2288389/free-photo-image-islam-muslim-pandemic-awarenessFree Image from public domain licenseTattooed man reading coronavirus updates from a laptop mockup with editorial graphic from… https://www.rawpixel.com/image/2312602/free-photo-image-tattoo-laptop-america-awarenessView licenseA beautiful pile of tree tomatoes in one of the vender’s stalls. Original image sourced from US Government department:… https://www.rawpixel.com/image/2288306/free-photo-image-cdc-creative-commonsFree Image from public domain licenseInfluenza virus illustration in semi–transparent green transparent png https://www.rawpixel.com/image/2288752/free-illustration-png-molecular-gastrointestinal-scienceView licensePregnant woman reading coronavirus updates from a laptop mockup with editorial graphic from https://www.coronavirus.gov/… https://www.rawpixel.com/image/2311174/free-photo-image-mockup-laptop-pregnancy-motherView licenseWoman reading coronavirus information from a laptop mockup with editorial graphic from https://www.coronavirus.gov/ accessed… https://www.rawpixel.com/image/2311665/free-photo-image-awareness-cdc-centers-for-disease-control-and-preventionView licenseAn Armed Forces of Liberia engineer cutting wood braces for the Tubmanburg Ebola treatment unit (ETU). https://www.rawpixel.com/image/2288303/free-photo-image-africa-african-engineer-african-american-soldierFree Image from public domain licenseWoman reading coronavirus updates from a computer screen mockup with editorial graphic from https://www.cdc.gov accessed on… https://www.rawpixel.com/image/2312591/free-photo-image-awareness-cdc-centers-for-disease-control-and-preventionView licensePregnant woman reading coronavirus updates from a laptop mockup with editorial graphic from https://www.cdc.gov accessed on… https://www.rawpixel.com/image/2311204/free-photo-image-pregnant-notebook-family-womanView licenseInfluenza virus illustration in semi–transparent green https://www.rawpixel.com/image/2288775/free-psd-blue-cdcView licenseWoman reading coronavirus updates from a computer screen mockup with editorial graphic from… https://www.rawpixel.com/image/2312585/free-photo-image-using-computer-working-woman-mockup-social-mediaView licenseChlorinated water containers captured West African Ebola outbreak. Original image sourced from US Government department:… https://www.rawpixel.com/image/2288483/free-photo-image-pandemic-african-awarenessFree Image from public domain license